DK2486692T3 - PUCCH resource allocation for carrier aggregation in LTE-advanced - Google Patents
PUCCH resource allocation for carrier aggregation in LTE-advanced Download PDFInfo
- Publication number
- DK2486692T3 DK2486692T3 DK10774312.2T DK10774312T DK2486692T3 DK 2486692 T3 DK2486692 T3 DK 2486692T3 DK 10774312 T DK10774312 T DK 10774312T DK 2486692 T3 DK2486692 T3 DK 2486692T3
- Authority
- DK
- Denmark
- Prior art keywords
- downlink
- component carrier
- user terminal
- resources
- downlink component
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/0001—Arrangements for dividing the transmission path
- H04L5/0003—Two-dimensional division
- H04L5/0005—Time-frequency
- H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
- H04L5/001—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT the frequencies being arranged in component carriers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/0091—Signaling for the administration of the divided path
- H04L5/0094—Indication of how sub-channels of the path are allocated
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/16—Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
- H04W28/26—Resource reservation
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
- H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/0001—Arrangements for dividing the transmission path
- H04L5/0003—Two-dimensional division
- H04L5/0005—Time-frequency
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W48/00—Access restriction; Network selection; Access point selection
- H04W48/16—Discovering, processing access restriction or access information
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/12—Wireless traffic scheduling
- H04W72/1263—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows
- H04W72/1273—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows of downlink data flows
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W8/00—Network data management
- H04W8/22—Processing or transfer of terminal data, e.g. status or physical capabilities
- H04W8/24—Transfer of terminal data
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/02—Terminal devices
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/08—Access point devices
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Quality & Reliability (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The invention is a method and apparatus for signaling uplink control information in a mobile communication network using carrier aggregation. The signaling mechanism allows the transmission, on a single uplink component carrier, of control information associated with a downlink transmission on multiple aggregated downlink component carriers. Semi-statically reserved resources for the transmission of control information on the uplink component carrier may be dynamically shared by user terminals that are assigned multiple downlink component carriers for downlink transmissions. Implicit or explicit resource indication can be used in combination with dynamic resource indication.
Description
DESCRIPTION
TECHNICAL FIELD
[0001] The present invention relates generally to carrier aggregation in a mobile communication System and, more particularly, to an efficient resource allocation for the physical uplink control channel for carrier aggregation.
BACKGROUND
[0002] Carrier aggregation is one of the new features being discussed for the next génération of Long Term Evolution (LTE) Systems, which is being standardized as part of LTE Release 10 (known as LTE-Advanced). LTE Rel 8 currently supports bandwidths up to 20 MHz. In LTE-Advanced, bandwidths up to 100 MHz will be supported. The very high data rates contemplated for LTE-Advanced will require an expansion of the transmission bandwidth. In order to maintain backward compatibility with LTE Rel-8 user terminals, the available spectrum is divided into Rel-8 compatible chunks called component carriers. Carrier aggregation enables the needed bandwidth expansion by allowing user terminais to transmit data over multiple component carriers comprising up to 100 MHz of spectrum. Carrier aggregation also ensures efficient use of a wide carrier for legacy terminais by making it possible for legacy terminais to be scheduled in ail parts of the wideband LTE-Advanced carrier.
[0003] The number of aggregated component carriers, as well as the bandwidth of the individual component carrier, may be different for Uplink (UL) and Downlink (DL). Asymmetrie configuration refers to the case where the number of component carriers in downlink and uplink is the same. An asymmetrie configuration refers to the case where the number of component carriers is different. The number of component carriers configured for a géographie cell area may be different from the number of component carriers seen by a terminal. A user terminal, for example, may support more downlink component carriers than uplink component carriers, even though in the géographie cell area the same number of uplink and downlink component carriers is offered by the network.
[0004] One considération for carrier aggregation is how to transmit control signaling from the user terminal on the uplink from the user terminal. Uplink control signaling may include acknowledgement (ACK) signaling for hybrid automatic repeat request (HARQ) protocols, channel state and quality information (CSI, CQI) reporting for downlink scheduling, and scheduling requests (SRs) indicating that the user terminal needs uplink resources for uplink data transmissions. One solution is to transmit the uplink control information on multiple uplink component carriers associated with different downlink component carriers. However, this option is likely to resuit in higher user terminal power consumption and a dependency on specific user terminal capabilities. It may also create implémentation issues due to inter modulation products, and may lead to generally higher complexity for implémentation and testing.
[0005] 3GPP document R1-093209 "Uplink Control Channel design for LTE-A" (ZTE) discloses to preferably use multiple Rel-8 PUCCH and to use one Rel-8 PUCCH on each UL corresponding to scheduled DL cells. When this préférable solution is not possible the alternative solution shown is to use multiplexing or bundling. R1-093209 thus discloses that PUCCH corresponding to multiple DL assignments are transmitted on a single UL carrier using Rel-8 PUCCH resources.
[0006] 3GPP document R1-090792 "Control Signaling design for supporting carrier aggregation" (Motorola) proposes that PUCCH for ail received DL assignments should be transmitted on a single UL carrier. Figure 4 shows the case where two different resources are used for PUCCH for DL1 and DL2, respectively. The resources used for DL1 PUCCH are the same as if only DL1 would have been scheduled. The PUCCH resources used in case of multiple DL assignments thus comprise the PUCCH resource used for single DL1 assignment (Figure 4), i.e., Rel. 8 resources are used also for a carrier aggregation scenario [0007] 3GPP document R1-083679 "UL layered control signal structure in LTE-Advanced" (NTT DOCOMO) discloses how application of different shifts can be used to separate flows of uplink control data relating to different DL CCs on a common UL carrier. Different shifts correspond to different resources. It is taught to allocate on the UL carrier, for a second or higher DL CC, both resources devoted to control data for the DL CC and additional resources, beyond those provided by Release 8, to be used by an ACK/NACK transmission scheme using a larger bandwidth. 3GPP document R1-081375 "Dynamic ACK/NAK Channelization on PUCCH" (Texas Instruments), 27 March 2008, discloses broadcast signaling that is used to indicate a logical resource block index where the ACK/NAK resources start.
SU M MARY
[0008] The embodiment of the invention, which is defined by the independent daims, provides a signaling mechanism for efficient transmission of control information in a communication System using carrier aggregation. The signaling mechanism allows the transmission, on a single uplink component carrier, of control information associated with downlink transmissions on multiple aggregated downlink component carriers. Semi-statically reserved resources for the transmission of control information on the uplink component carrier may be dynamically shared by user terminais that are assigned multiple downlink component carriers for downlink transmissions. Implicit or explicit resource indication can be used in combination with dynamic resource indication.
[0009] One exemplary embodiment proposes a method implemented by a base station of receiving control information from user terminais. The method comprises scheduling downlink transmissions to said user terminal on one or more downlink component carriers; if the user terminal is scheduled to receive downlink transmissions on a first single downlink component carrier, receiving control information associated with the downlink transmissions to the user terminal on a first set of radio resources on an uplink primary component carrier associated with said first downlink component carrier; and if the user terminal is scheduled to receive downlink transmissions on a second single downlink component carrier or multiple downlink component carriers, receiving control information associated with the downlink transmissions to the user terminal on a second set of radio resources on the uplink primary component carrier.
[0010] Another exemplary embodiment proposes a base station for transmitting data to one or more user terminais. The base station comprises a transmitter to transmit user data on one or more downlink component carriers to a user terminal; and a controller to schedule downlink transmissions to the user terminal. The controller is configured to schedule downlink transmissions to the user terminal on one or more downlink component carriers; if the user terminal is scheduled to receive downlink transmissions on a first single downlink component carrier, receive control information associated with the downlink transmissions to the user terminal on a first set of radio resources on a uplink primary component carrier associated with said first downlink component carrier; and, if the user terminal is scheduled to receive downlink transmissions on a second single downlink component carrier or multiple downlink component carriers, receive control information associated with the downlink transmissions to the user terminal on a second set of radio resources on the uplink primary component carrier.
[0011] Another exemplary embodiment proposes a method of transmitting control information implemented by a user terminal in a mobile communication network. The method comprises receiving an assignment of radio resources for downlink transmissions from a base station; transmitting control information associated with the downlink transmissions on a first set of radio resources on an uplink component carrier if an assignment of single downlink component carrier for the downlink transmission is received; and transmitting control information associated with the downlink transmissions on a second set of radio resources on the uplink component carrier if an assignment of multiple downlink component carriers for the downlink transmission is received.
[0012] Another exemplary embodiment proposes a user terminal configured to send control information associated with downlink transmissions on one or more downlink component carriers. The user terminal comprises a receiver to receive downlink transmissions from a base station; a transmitter to transmit control information associated with the downlink transmission to a base station; and a controller to select radio resources for transmission of control information associated with the downlink transmissions. The controller is configured to select a first set of radio resources on an uplink component carrier if an assignment of a single downlink component carrier for the downlink transmission is received; and select a second set of radio resources on the uplink component carrier if an assignment of multiple downlink component carriers for the downlink transmission is received.
[0013] Another exemplary embodiment proposes an alternate method of transmitting control information implemented by a user terminal in a mobile communication network. The method comprises receiving an assignment of radio resources for a downlink transmissions from a base station; transmitting control information associated with the downlink transmission on a first set of radio resources on an uplink component carrier if an assignment of a first downlink component carrier for the downlink transmission is received; and transmitting control Information associated with the downlink transmission on a second set of radio resources on the uplink component carrier if an assignment of a second downlink component carrier for the downlink transmission is received.
[0014] Another exemplary embodiment proposes a user terminal configured to send control Information associated with downlink transmissions on one or more downlink component carriers. The user terminal comprises a receiver to receive downlink transmissions from a base station; a transmitter to transmit control information associated with the downlink transmission to a base station; and a controller to select radio resources for transmission of control Information associated with the downlink transmission. The controller is configured to select a first set of radio resources on an uplink component carrier if an assignment of a first downlink component carrier for the downlink transmission is received; and select a second set of radio resources on the uplink component carrier if an assignment of a second downlink component carrier for the downlink transmission is received.
BRIEF DESCRIPTION OF THE DRAWINGS
[0015]
Fig. 1 illustrâtes an exemplary OFDM communication System.
Fig. 2 illustrâtes an exemplary time-frequency grid for an OFDM System.
Fig. 3 illustrâtes an exemplary time-domain structure for an OFDM System.
Fig. 4 illustrâtes uplink L1/L2 control signaling transmission on PUCCH.
Fig. 5 illustrâtes the PUCCH format 1 using a normal cyclic prefix.
Fig. 6 illustrâtes the PUCCH format 2 using a normal cyclic prefix.
Fig. 7 illustrâtes an exemplary allocation of resource blocks for PUCCH.
Fig. 8 illustrâtes the concept of carrier aggregation.
Fig. 9 illustrâtes an exemplary method implemented by a base station of receiving control information from user terminais scheduled on a single carrier and multiple carriers.
Fig. 10 illustrâtes an exemplary method implemented by a user terminal of signaling control information to a base station.
Fig. 11 illustrâtes another exemplary method implemented by a user terminal of signaling control information to a base station.
Fig. 12 illustrâtes an exemplary base station with a controller for controlling downlink transmissions by the base station to one or more user terminais and associated transmissions of uplink control information by the user terminais
Fig. 13 illustrâtes an exemplary user terminal with a controller for controlling transmission of uplink control information to a base station.
DETAILED DESCRIPTION
[0016] Referring now to the drawings, Fig. 1 illustrâtes an exemplary mobile communication network 10 for providing wireless communication services to user terminais 100. Three user terminais 100 are shown in Fig. 1. The user terminais 100 may comprise, for example, cellular téléphonés, personal digital assistants, smart phones, laptop computers, handheld computers, or other devices with wireless communication capabilities. The mobile communication network 10 comprises a plurality of géographie cell areas or sectors 12. Each géographie cell area or sector 12 is served by a base station 20, which is referred to in LTE as a NodeB or Enhanced NodeB (eNodeB). A single base station 20 may provide service in multiple géographie cell areas or sectors 12. The user terminais 100 receive signais from a serving base station 20 on one or more downlink (DL) channels, and transmit signais to the base station 20 on one or more uplink (UL) channels.
[0017] For illustrative purposes, an exemplary embodiment of the present invention will be described in the context of a Long-Term Evolution (LTE) System. Those skilled in the art will appreciate, however, that the present invention is more generally applicable to other wireless communication Systems, including Wideband Code-Division Multiple Access (WCDMA) and WiMax (IEEE 802.16) Systems.
[0018] LTE uses Orthogonal Frequency Division Multiplexing (OFDM) in the downlink and Discrete Fourier Transform (DFT) spread OFDM in the uplink. The basic LTE downlink physical resource can be viewed as a time-frequency grid. Fig. 2 illustrâtes a portion of an exemplary OFDM time-frequency grid 50 for LTE. Generally speaking, the time-frequency grid 50 is divided into one millisecond subframes. Each subframe includes a number of OFDM symbols. For a normal cyclic prefix (CP) length, suitable for use in situations where multipath dispersion is not expected to be extremely severe, a subframe comprises fourteen OFDM symbols. A subframe comprises twelve OFDM symbols if an extended cyclic prefix is used. In the frequency domain, the physical resources are divided into adjacent subcarriers with a spacing of 15 kHz. The number of subcarriers varies according to the allocated system bandwidth. The smallest element of the time-frequency grid 50 is a resource element. A resource element comprises one OFDM subcarrier during one OFDM symbol interval.
[0019] In LTE Systems, data is transmitted to the user terminals over a downlink transport channel known as the Physical Downlink Shared Channel (PDSCH). The PDSCH is a time and frequency multiplexed channel shared by a plurality of user terminals. As shown in Fig. 3, the downlink transmissions are organized into 10 ms radio frames. Each radio frame comprises ten equally-sized subframes. For purposes of scheduling users to receive downlink transmissions, the downlink time-frequency resources are allocated in units called resource blocks (RBs). Each resource block spans twelve subcarriers (which may be adjacent or distributed across the frequency spectrum) and one 0.5 ms slot (one half of one subframe). The term "resource block pair" refers to two consecutive resource blocks occupying an entire one millisecond subframe.
[0020] The base station 20 dynamically schedules downlink transmissions to the user terminals based on channel state and quality information (CSI, CQI) reports from the user terminals on the Physical Uplink Control Channel (PUCCH) or Physical Uplink Shared Channel (PUSCH). The CQI and CSI reports indicate the instantaneous channel conditions as seen by the receiver. In each subframe, the base station 20 transmits downlink control information (DCI) identifying the user terminals that have been scheduled to receive data (hereinafter the scheduled terminals) in the current downlink subframe and the resource blocks on which the data is being transmitted to the scheduled terminals. The DCI is typically transmitted on the Physical Downlink Control Channel (PDCCH) in the first 1, 2, or 3 OFDM symbols in each subframe.
[0021] Hybrid Automatic Repeat Request (HARQ) is used to mitigate errors that occur during transmission of data on the downlink. When the base station 20 indicates that a user terminal 100 is scheduled to receive a transmission on the PDSCH, the user terminal 100 décodés the PDSCH and transmits an acknowledgement (ACK/NACK message to base station 20 on the PUCCH or PUSCH. The acknowledgement message informs the base station 20 whether the data packet was correctly received by the user terminal 100. The acknowledgement message could be either a positive acknowledgement (ACK) indicating a successful decoding or a negative acknowledgement (NACK) message indicating a decoding failure. Based on the acknowledgement message received from the user terminal 100, base station 20 détermines whether to transmit new data (ACK received) or to retransmit the previous data (NACK received).
[0022] For uplink transmissions, the user terminals transmit scheduling requests (SRs) to the base station 20 on the PUCCH when the user terminals have data to send but no valid uplink grant. The base stations 20 allocate uplink resources responsive to the scheduling requests and transmit a scheduling grant to the user terminal 100 on the PDCCH. When the data is received, the base station 20 transmits ACK/NACK signaling to the user terminal 100 on the Physical Hybrid Automatic Repeat Request Indicator Channel. (PHICH) to indicate whether the data is received correctly.
[0023] If the user terminal 100 has not been assigned an uplink resource for data transmission, the L1/L2 control information (CQI reports, ACK/NACKs, and SRs) is transmitted in uplink resources (resource blocks) specifically assignée! for uplink transmission of L1/L2 control information on the Physical Uplink Control Channel (PUCCH). As illustrated in Fig. 4, these resources are located at the edges of the total available cell bandwidth. Each PUCCH resource comprises of one resource block (twelve subcarriers) within each of the two slots of an uplink subframe. Frequency hopping is used to provide frequency diversity. The frequency of the resource blocks alternate at the slot boundary, with one resource block at the upper part of the spectrum within the first slot of a subframe and an equally sized resource block at the lower part of the spectrum during the second slot of the subframe, or vice versa. If more resources are needed for the uplink L1/L2 control signaling, e.g., in case of very large overall transmission bandwidth supporting a large number of users, additional resource blocks can be assigned adjacent the previously assigned resource blocks.
[0024] The reasons for locating the PUCCH resources at the edges of the overall available spectrum are two-fold. First, the allocation maximizes the frequency diversity, particularly when frequency hopping is employed. Second, the allocation avoids fragmentation of the uplink spectrum, which would make it impossible to assign very wide transmission bandwidths to a single user terminal 100 and still retain the single-carrier property of the uplink transmission.
[0025] The bandwidth of one resource block during one subframe is too large for the control signaling needs of a single user terminal 100. Therefore, to efficiently exploit the resources set aside for control signaling, multiple user terminals can share the same resource block. This is done by assigning the different terminals different orthogonal phase rotations of a cell-specific length-12 frequency-domain sequence. A linear phase rotation in the frequency domain is equivalent to applying a cyclic shift in the time domain. Thus, although the term "phase rotation" is used herein, the term cyclic shift is sometimes used with an implicit reference to the time domain.
[0026] The resource used by a PUCCH is therefore not only specified in the time-frequency domain by the resource-block pair, but also by the phase rotation applied. Similarly to the case of reference signais, there are up to twelve different phase rotations specified in the LTE standard, providing up to twelve different orthogonal sequences from each cell-specific sequence. However, in the case of frequency-selective channels, not all the twelve phase rotations can be used if orthogonality is to be maintained. Typically, up to six rotations are considered usable in a cell.
[0027] There are two message formats defined for transmission of control information on the PUCCH, each capable of carrying a different number of bits. A user terminal 100 uses PUCCH format 1 to transmit HARQ acknowledgements and scheduling requests. For CQI reporting, the user terminal 100 uses PUCCH format 2.
[0028] Hybrid-ARQ acknowledgements are used to acknowledge the réception of one (or two in case of spatial multiplexing) transport blocks in the downlink. Scheduling requests are used to request resources for uplink data transmission. A scheduling request is transmitted only when the user terminal 100 is requesting resources, otherwise the user terminal 100 stays silent in order to save battery resources and not create unnecessary interférence. For scheduling requests, no explicit information bit is transmitted. Instead, the user terminal requests uplink resources by the presence (or absence) of energy on the corresponding PUCCH. Although HARQ acknowledgements and scheduling requests serve different purposes, they share the same PUCCH format. This format is referred to as PUCCH format 1 in the spécifications [0029] Fig. 5 illustrâtes the structure of a PUCCH format 1 message. The PUCCH format 1 uses the same structure in each of the two slots of a subframe. For transmission of a HARQ acknowledgement, the single HARQ acknowledgement bit is used to generate a BPSK symbol (in case of downlink spatial multiplexing the two acknowledgement bits are used to generate a QPSK symbol). For a scheduling request, on the other hand, the BPSK/QPSK symbol is replaced by a constellation point treated as negative acknowledgement at the base station 20. The modulation symbol is then used to generate the signal to be transmitted in each of the two PUCCH slots.
[0030] A PUCCH format 1 resource, used for either a HARQ acknowledgement or a scheduling request, is represented by a single scalar resource index. From the index, the phase rotation and the orthogonal cover sequence is derived. For HARQ transmission, the resource index to use for transmission of the HARQ acknowledgement is given implicitly by the DCI transmitted on the PDCCH to schedule the downlink transmission to the user terminal 100. Thus, the resources to use for an uplink HARQ acknowledgement vary dynamically and dépend on the DCI used to schedule the user terminal 100 in each subframe.
[0031] In addition to dynamic scheduling based on the DCI transmitted by the base station on the PDCCH, it is also possible to semi-persistently schedule a user terminal 100 according to a specific pattern. In this case the configuration information indicating the semi-persistent scheduling pattern includes information on the PUCCH index to use for the HARQ acknowledgements. The configuration information also informs the user terminal 100 which PUCCH resources to use for transmission of scheduling requests.
[0032] The PUCCH resources are split into two parts: a semi-static part and a dynamic part. The semi-static part of the PUCCH resources is used for scheduling requests and HARQ acknowledgements from semi-persistent users. The amount of resources used for the semi-static part of PUCCH 1 resources does not vary dynamically. The dynamic part is used for dynamically scheduled user terminais. As the number of dynamically scheduled terminais varies, the amount of resources used for the dynamic PUCCHs varies.
[0033] Channel-status reports are used to provide the base station 20 with an estimate of the channel conditions as seen by the user terminal 100 in order to aid channel-dependent scheduling. A channel-status report consists of multiple bits per subframe. PUCCH format 1, which is capable of at most two bits of information per subframe, can not be used for this purpose. Transmission of channel-status reports on the PUCCH is instead handled by PUCCH format 2, which is capable of multiple information bits per subframe.
[0034] PUCCH format 2, illustrated for normal cyclic prefix in Fig. 6, is based on a phase rotation of the same cell-specific sequence as format 1. Similarly to format 1, a format 2 resource can be represented by an index from which the phase rotation and other quantities necessary are derived. The PUCCH format 2 resources are semi-statically configured.
[0035] Both PUCCH format 1 and format 2 signaling messages are transmitted on a resource-block pair with one resource block in each slot. The resource-block pair is determined from the PUCCH resource index. Thus, the resou rce-block number to use in the first and second slot of a subframe can be expressed as RBnumbor(i) = f(PUCCH index, i) where i is the slot number (0 or 1) within the subframe and f a function found in the spécification.
[0036] Multiple resource-block pairs can be used to increase the control-signaling capacity. When one resource-block pair is füll, the next PUCCH resource index is mapped to the next resource-block pair in sequence. The mapping is done such that PUCCH format 2 (channel-status reports) is transmitted dosest to the edges of the uplink cell bandwidth with the semi-static part of PUCCH format 1 next and finally the dynamic part of PUCCH format 1 in the innermost part of the bandwidth as shown in Fig. 7.
[0037] Three semi-statically parameters are used to détermine the resources to use for the different PUCCH formats: provided as part of the System information, Controls on which resource-block pair the mapping of PUCCH format 1 starts mO·)'·
1' PUCCH
Controls the split between the semi-static and dynamic part of PUCCH format 1 ,V(1>
Controls the mix of format 1 and format 2 in one resource block. In most cases, the configuration is done such that the two PUCCH formats are mapped to separate sets of resource blocks, but there is also a possibility to have the border between format 1 and 2 within a resource block.
[0038] In order to support bandwidths greater than 20MHz, carrier aggregation will be supported in LTE Rel 10. To maintain backward compatibility with Rel 8 user terminais 100, the available spectrum is divided into Rel-8 compatible component carriers (e.g., 20 Mhz component carriers) as shown in Fig. 8. A user terminal 100 can obtain bandwidth up to 100 MHz by transmitting on multiple component carriers. The use of multiple component carriers for data transmission is known as carrier aggregation.
[0039] The number of aggregated component carriers as well as the bandwidth of the individual component carrier may be different for Uplink (UL) and Downlink (DL). A symmetrie configuration refers to the case where the number of component carriers in DL and UL are the same. An asymmetrie configuration refers to the case where the number of component carriers is different for the UL and DL. The number of component carriers configured for a géographie cell area 12 may be different from the number of component carriers seen by the user terminal 100. A user terminal 100 may, for example, support more DL component carriers than UL component carriers, even though in the géographie cell area 12 the same number of UL and DL component carriers is offered by the network.
[0040] One considération for carrier aggregation is how to configure the PUCCH for uplink control signaling from the user terminal. One solution is to transmit the uplink control information on multiple control channels on multiple UL component carriers. However, this option is likely to resuit in higher user terminal power consumption and a dependency on specific user terminal capabilities. It may also create implémentation issues due to intermodulation products, and may lead to generally higher complexity for implémentation and testing.
[0041] According to some embodiments of the present invention, the PUCCH resources on a single uplink component carrier are used to support downlink transmissions on several downlink component carriers. With this approach, a user terminal 100 transmit HARQ signaling associated with downlink transmissions on two or more downlink component carriers on PUCCH resources on a single uplink component carrier. Similarly, a single uplink component carrier may be used to support uplink transmissions on several uplink component carriers. For example, a user terminal 100 may use PUCCH resources on a single uplink component carrier to request uplink resources on multiple uplink component carriers. The uplink component carrier on which PUCCH resources are used to support downlink or uplink transmissions on two or more component carriers is referred to herein as uplink primary component carrier (UL PCC) or uplink associated with the primary cell (PCell).
[0042] For HARQ signaling, a straight-forward approach would be to increase the PUCCH resources on the UL PCC for PUCCH format 1 by a factor of N, where N is the number of aggregated downlink component carriers supported. However, considération should be given to the typical expected use case. Not all user terminals 100 will be scheduled to receive downlink transmission on multiple downlink component carriers. The number of downlink component carriers used for transmission will be user terminal specific and will vary dynamically as user terminais 100 are scheduled. With bursty data-transmission, the number of user terminais 100 simultaneously assigned resources on several downlink carriers is expected to be rather small. Multiple downlink component carriers are only needed when there are not enough resources on a single component carrier, and there appears to be no benefits from assigning several smaller transport blocks on multiple downlink component carriers for a large number of user terminals 100. Therefore, the design of the ACK/NACK feedback on PUCCH should be optimized for a low number of simultaneous user terminals 100 with assignments on multiple downlink component carrier.
[0043] Considering that the typical use case is a rather small number of user terminals 100 simultaneously assigned resources on multiple downlink component carriers, increasing the overhead with a factor of N is probably not necessary. Rather, the amount of resources should be chosen in anticipation on the number of user terminals 100 that simultaneously are expected to have assignments on multiple downlink component carriers, which is expected to be scenario and implémentation dépendent. This could be achieved by configuring a set of uplink resources upon which the currently scheduled user terminal(s) 100 using multiple component carriers transmit the ACK/NACK feedback.
[0044] According to a first approach, a set of shared PUCCH resources of potentially configurable size, in addition to PUCCH resources according to LTE Rel-8, is allocated for HARQ acknowledgements by user terminals 100 which receive downlink assignments on multiple downlink component carriers. The resource set and/or the size of the resource set can be transmitted to the user terminal by Radio Resource Control (RRC) signaling. With this approach, the UL PCC contains PUCCH resources according to LTE Rel-8 for HARQ acknowledgements from user terminals 100 assigned resources for downlink transmission on a single downlink component carrier associated with the UL PCC. The shared PUCCH resource would be used by user terminals 100 which receive resource assignments for downlink transmission on multiple downlink component carriers. There may be some ci reu m stances, such as retransmissions, when the user terminal 100 is assigned resources on a single downlink component carrier that is different from the downlink component carrier associated with the UL PCC. In such a case the shared set of PUCCH resources can also be used for such "cross-carrier" HARQ acknowledgements.
[0045] According to a second approach, a set of shared PUCCH resources of potentially configurable size, in addition to PUCCH resources according to LTE Rel-8, is allocated for HARQ acknowledgements by user terminals 100 which receive downlink assignments on at least one downlink component carrier other than the downlink component carrier having associated Rel- 8 resources on the UL PCC. The resource set and/or the size of the resource set can be transmitted to the user terminal by RRC signaling.
[0046] With either of the above approaches, the set of shared PUCCH resources may be made visible to the user terminal 100 in the same way as for LTE Rel-8 user terminals 100, namely in the form of an association rule between the DL PDCCH CCE and index to PUCCH resource. Thus, from a System perspective, the two sets of PUCCH resources could overlap or be interleaved. In principle, a user terminal 100 could be configured with semi-static PUCCH resources for HARQ acknowledgements and then use these resources for HARQ acknowledgements in case of multiple DL component carrier assignments. By configuring all the user terminals 100 in the cell to have the same semi-static ACK/NACK resources, such a scheme would allow for assigning at most a single user terminal multiple DL component carrier at the same time. When there is no need for HARQ acknowledgements of multiple carriers, the resource could of course be used for data transmission. The user terminals 100 could select which shared PUCCH resources to use based on component carrier, DL PDDCH CCE, C-RNTI and other parameters. There is though a risk for collisions or scheduling constraints, and to reduce this, one could consider having a dynamic indicator to aid the sélection of PUCCH resource. The dynamic indication allows managing the ACK/NACK resources more carefully which is of interest when the amount of resources reserved for HARQ acknowledgements is small and orthogonality is desired.
[0047] In one exemplary embodiment, semi-static PUCCH resources are reserved for user terminals 100 configured with multiple downlink component carriers. The assignment of PUCCH resources can be achieved by implicit indication of actual resource block, e.g., utilizing CCE index, number of the downlink component carriers, RNTI or a combination of these parameters. Alternatively, reserved PUCCH resources can be indicated explicitly via signaling to the user terminal 100 (e.g., RRC signaling), or by a combination of implicit and explicit signaling. Additionally, dynamic indication of PUCCH resources for HARQ acknowledgements can be done by using additional relative or explicit dynamic indication to select actual PUCCH resources out of the set of implicit/explicitly reserved (e.g., semi-statically reserved) resources. For example, the base station 20 may send as a control message or part of a control message, an indicator, referred to herein as an acknowledgement resource indication (ARI), comprising a single bit to indicate that the user terminal 100 should use the next available PUCCH resource or the next cyclically available PUCCH resource from the set of semi-statically reserved PUCCH resources. In some embodiments, the ARI may comprise the entire control message. In other embodiment, the ARI may be included as an information element in a larger control message. Alternatively, the base station 20 can send a multi-bit ARI to indicate the actual PUCCH resource out of the set of semi-statically reserved PUCCH resources.
[0048] There may be at least two different mappings to PUCCH resources on the UL PCC. A first resource mapping may be used for HARQ acknowledgements of downlink transmissions on a single designated downlink component carrier, and a second mapping for HARQ acknowledgements of downlink transmissions on at least one other downlink component carrier. The two mappings may be described by parameters, such as first resource and size of resource set that are configurable by means of higher layer signaling. The user terminal 100 may, based on the detected downlink assignments on one or several downlink component carriers, select one of the two mappings. In a preferred embodiment, the first mapping coïncides with the Rel-8 mapping rules for ACK/NACK resources.
[0049] The user terminal 100 may, depending on the detected downlink assignments, and the downlink component carriers on which the downlink assignment was sent, select which mapping to use. Two approaches may be used by the user terminal 100 to select the mapping of radio resources for uplink control signaling. In the first approach, the user terminal 100 selects a first mapping if downlink assignment of a single downlink component carrier is detected and the downlink assignment is sent on the associated downlink component carrier. The user terminal 100 selects a second mapping if it detects at least one downlink assignment for at least one downlink component carrier different from the single associated downlink component carrier (for which there are Rel-8 ACK/NACK resources). In a second approach, the user terminal selects a mapping depending on the number of component carriers it detects for downlink assignments for downlink transmissions.
[0050] Fig. 9 illustrâtes an exemplary method 50 implemented by a base station 20 in a communication network 10 of receiving uplink control information from a user terminal 100 depending ion the assignment of downlink component carriers. The base station 20 schedules the user terminal 100 to receive downlink transmissions on one or more downlink component carriers (block 52). The user terminal 100 may be scheduled to receive downlink transmissions on a single downlink component carrier associated with a primary uplink component carrier. In this case, the base station 20 receives control information associated with the downlink transmissions to the user terminal 100 on a first set of radio resources on the uplink primary component carrier (block 54). Alternative^, the user terminal 100 may be scheduled to receive downlink transmissions on multiple downlink component carriers, or on a single downlink component carrier other than the downlink component carrier associated with the uplink primary component carrier. In this alternative case, the base station 20 receives uplink control information associated with the downlink transmissions from the user terminal 100 on a second set of radio resources on the uplink component carrier (block 56).
[0051] Fig. 10 illustrâtes an exemplary method 60 implemented by a user terminal of transmission of uplink control signaling to a base station 20. The user terminal 100 receives a radio resource assignment for a downlink transmission from the base station 20 (block 62). If the user terminal 100 detects assignments of radio resources for a single downlink component carrier, the user terminal 100 transmits, on a first set of radio resources on an uplink primary component carrier, uplink control information associated with the downlink transmissions (block 64). On the other hands, if the user terminal 100 receives assignments for multiple downlink component carriers, the user terminal 100 transmits, on a second set of radio resources on the uplink primary component carrier, uplink control information associated with downlink transmissions (block 66).
[0052] Fig. 11 illustrâtes another exemplary method 70 implemented by a user terminal 100 of transmission of uplink control signaling to a base station 20. The user terminal 100 receives a radio resource assignment for a downlink transmission from the base station 20 (block 72). If the user terminal 100 detects assignments of radio resources for a first downlink component carrier, the user terminal 100 transmits, on a first set of radio resources on a uplink primary component carrier, uplink control information associated with the downlink transmissions (block 74). On the other hands, if the user terminal 100 receives assignments for a second downlink component carrier, the user terminal 100 transmits, on a second set of radio resources on the primary uplink component carrier, uplink control information associated with downlink transmissions (block 76).
[0053] Fig. 12 illustrâtes an exemplary base station 20 according to the present invention. The base station 20 comprises a transceiver 22 for communicating with user terminais and processing circuit 32 for processing the signais transmit and received by the transceiver 22. The transceiver 22 includes a transmitter 24 coupled to one or more transmit antennas 28 and receiver 26 coupled to one or more receive antennas 30. The same antenna(s) 28, 30 may be used for both transmission and réception. The processing circuit 32 may be implemented by one or more processors, hardware, firmware or a combination thereof. Typical functions of the processing circuit 32 include modulation and coding of transmitted signais, and the démodulation and decoding of received signais. The processing circuit 32 also includes a controller 34 for controlling the operation of the base station 20. The controller 34 is responsible for transmission of downlink control information on the PDCCH, and for the processing of uplink control information received on the PUCCH.
[0054] Fig. 13 illustrâtes a functional block diagram of an exemplary user terminal 100. The user terminal 100 comprises a transceiver 110 and a processing circuit 120. The transceiver 110 comprises a transmitter 112 coupled to one or more transmit antennas 114, and a receiver 116, coupled to one or more receive antennas 118. Those skilled in the art will appreciate that the same antennas may be used for transmission and réception. The processing circuit 120 processes signais transmitted and received by the transceiver 110. The processing circuit 120 comprises one or more processors, hardware, firmware, or a combination thereof. Typical functions of the processing circuit 120 include modulation end coding of transmitted signais, and the démodulation and decoding of received signais. The processing circuit 120 includes a controller 122 for controlling uplink transmissions and the réception of downlink transmissions. The controller 122 generates uplink control information for transmission on the PUCCH, and processes downlink control information received on the PDCCH as previously described.
[0055] The invention provides means for efficient transmission of PUCCH on one component carrier corresponding to multiple downlink component carriers, without creating implémentation Problems in the user terminal or being over-dimensioned and therefore inefficient.
Claims (8)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US24866109P | 2009-10-05 | 2009-10-05 | |
PCT/SE2010/051069 WO2011043721A2 (en) | 2009-10-05 | 2010-10-04 | Pucch resource allocation for carrier aggregation in lte-advanced |
Publications (1)
Publication Number | Publication Date |
---|---|
DK2486692T3 true DK2486692T3 (en) | 2018-03-12 |
Family
ID=43735802
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DK10774312.2T DK2486692T3 (en) | 2009-10-05 | 2010-10-04 | PUCCH resource allocation for carrier aggregation in LTE-advanced |
Country Status (12)
Country | Link |
---|---|
US (3) | US9497004B2 (en) |
EP (2) | EP2486692B1 (en) |
JP (3) | JP5763651B2 (en) |
CN (2) | CN102577219B (en) |
DK (1) | DK2486692T3 (en) |
ES (2) | ES2752802T3 (en) |
HU (1) | HUE045726T2 (en) |
NZ (1) | NZ598903A (en) |
PL (1) | PL2486692T3 (en) |
PT (1) | PT2486692T (en) |
RU (1) | RU2549365C2 (en) |
WO (1) | WO2011043721A2 (en) |
Families Citing this family (78)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9396212B2 (en) | 2004-04-07 | 2016-07-19 | Visible World, Inc. | System and method for enhanced video selection |
CA2771081C (en) * | 2009-08-14 | 2016-09-27 | Research In Motion Limited | Method and apparatus for power sharing carrier set for carrier aggregation |
NZ598903A (en) * | 2009-10-05 | 2014-02-28 | Ericsson Telefon Ab L M | Pucch resource allocation for carrier aggregation in lte-advanced |
KR20110037426A (en) * | 2009-10-06 | 2011-04-13 | 주식회사 팬택 | Method for transmitting information on component carriers in wireless communication system and wireless communication system thereof |
KR101797491B1 (en) | 2009-12-02 | 2017-11-15 | 엘지전자 주식회사 | Method and apparatus of mitigating interference in a wireless system supporting heterogeous network |
WO2011099340A1 (en) * | 2010-02-09 | 2011-08-18 | シャープ株式会社 | Communication method, mobile station apparatus, base station apparatus and mobile communication system |
BR112012024374B1 (en) * | 2010-03-25 | 2022-02-22 | Sharp Kabushiki Kaisha | User equipment, base station apparatus, method of communication of a user equipment and method of communication of a base station apparatus |
US8520491B2 (en) * | 2010-04-01 | 2013-08-27 | Nokia Siemens Networks Oy | Periodic channel state information signaling with carrier aggregation |
JP5265616B2 (en) * | 2010-05-18 | 2013-08-14 | 株式会社エヌ・ティ・ティ・ドコモ | Wireless communication system |
JP5589558B2 (en) * | 2010-05-26 | 2014-09-17 | ソニー株式会社 | Wireless communication apparatus and wireless communication method |
US8923223B2 (en) * | 2010-08-16 | 2014-12-30 | Qualcomm Incorporated | Physical uplink control channel resource allocation for multiple component carriers |
US20130142161A1 (en) * | 2010-08-17 | 2013-06-06 | Lg Electronics Inc. | Method and apparatus for transmitting control information in a wireless communication system |
CN102104962B (en) * | 2010-09-17 | 2014-02-05 | 电信科学技术研究院 | Method and equipment for allocating uplink control channel resources in multi-antenna scene |
US9930677B2 (en) * | 2010-12-07 | 2018-03-27 | Sharp Kabushiki Kaisha | Prioritizing multiple channel state information (CSI) reporting with carrier aggregation |
US8934440B2 (en) * | 2011-01-07 | 2015-01-13 | Pantech Co., Ltd. | Method and device for transmitting response information, and resource allocation for response information transmission according to transmission conditions in a wireless communication system |
GB2487907B (en) * | 2011-02-04 | 2015-08-26 | Sca Ipla Holdings Inc | Telecommunications method and system |
GB2489956B (en) * | 2011-04-12 | 2013-03-20 | Renesas Mobile Corp | Sensing configuration in carrier aggregation scenarios |
US8953443B2 (en) | 2011-06-01 | 2015-02-10 | At&T Intellectual Property I, L.P. | Method and apparatus for providing congestion management for a wireless communication network |
EP2556620A1 (en) | 2011-06-04 | 2013-02-13 | Esmael Hejazi Dinan | Multicarrier ofdm transmission using carrier aggregation |
CN102843732B (en) | 2011-06-20 | 2015-11-25 | 华为技术有限公司 | A kind of TDD communication means, base station and subscriber equipment |
RU2565247C1 (en) * | 2011-08-15 | 2015-10-20 | Телефонактиеболагет Л М Эрикссон (Пабл) | Method and assembly for processing scheduling request |
CN103209483B (en) * | 2012-01-12 | 2015-09-09 | 华为技术有限公司 | The method of transmitting uplink control information, subscriber equipment and base station |
WO2013127466A1 (en) | 2012-03-02 | 2013-09-06 | Nokia Siemens Networks Oy | Allocation of communication resources |
KR20130111999A (en) * | 2012-04-02 | 2013-10-11 | 엘지전자 주식회사 | Method of configuring resource blocks for search space of distributed downlink control channel in wireless communication system and apparatus thereof |
US8743820B2 (en) | 2012-05-30 | 2014-06-03 | Intel Corporation | PUCCH resource allocation with enhanced PDCCH |
AU2012384578B2 (en) * | 2012-07-06 | 2017-03-02 | Telefonaktiebolaget L M Ericsson (Publ) | Method and network node for allocating resources of an uplink subframe |
GB2504293B (en) * | 2012-07-24 | 2015-01-14 | Anritsu Corp | A carrier aggregation testing method and apparatus for performing the same |
US8837271B1 (en) | 2012-10-04 | 2014-09-16 | Sprint Spectrum L.P. | Method and system for sharing a downlink resource block among multiple users |
JP2014090396A (en) * | 2012-10-04 | 2014-05-15 | Ntt Docomo Inc | Mobile station and wireless base station |
WO2014084821A1 (en) * | 2012-11-28 | 2014-06-05 | NII Holdings, Inc. | System and method for using narrow uplink channels in combination with carrier aggregated downlink channels |
US20140301352A1 (en) * | 2013-04-04 | 2014-10-09 | Nokia Siemens Networks Oy | Enhanced physical harq indicator channel structure |
US20150030098A1 (en) * | 2013-07-25 | 2015-01-29 | Sony Corporation | Interference canceling for mobile devices |
EP3570480B1 (en) | 2013-08-07 | 2020-12-23 | Huawei Technologies Co., Ltd. | Information sending and receiving methods and devices |
CN104348585B (en) * | 2013-08-09 | 2018-08-21 | 上海诺基亚贝尔股份有限公司 | A kind of method and apparatus being used for transmission ascending control information |
RU2631660C1 (en) * | 2013-09-27 | 2017-09-26 | Нокиа Солюшнз энд Нетуоркс Ой | Distribution and use of resources of physical channel of controlling rising connection line |
EP3076731B1 (en) * | 2013-11-25 | 2019-06-05 | Sony Corporation | Communication control apparatus, communication control method and terminal apparatus |
JP6443890B2 (en) | 2014-01-31 | 2018-12-26 | パナソニック インテレクチュアル プロパティ コーポレーション オブ アメリカPanasonic Intellectual Property Corporation of America | Terminal, base station, transmission method and reception method |
US9622233B1 (en) | 2014-06-16 | 2017-04-11 | Sprint Spectrum L.P. | Dynamic use of orthogonal coding to manage control channel capacity |
KR101913607B1 (en) * | 2014-07-17 | 2018-10-31 | 엘지전자 주식회사 | Method and apparatus for requesting scheduling in wireless communication system |
US9955356B2 (en) * | 2014-09-25 | 2018-04-24 | Intel IP Corporation | System and method of handling uplink transmission collision for enhanced coverage mode UEs |
CN107113147B (en) | 2014-12-31 | 2020-11-06 | Lg电子株式会社 | Method and apparatus for allocating resources in wireless communication system |
US10264564B2 (en) * | 2015-01-30 | 2019-04-16 | Futurewei Technologies, Inc. | System and method for resource allocation for massive carrier aggregation |
US9820264B2 (en) | 2015-03-09 | 2017-11-14 | Ofinno Technologies, Llc | Data and multicast signals in a wireless device and wireless network |
US10700845B2 (en) | 2015-03-09 | 2020-06-30 | Comcast Cable Communications, Llc | Secondary cell deactivation in a wireless device and a base station |
US10182406B2 (en) | 2015-03-09 | 2019-01-15 | Comcast Cable Communications, Llc | Power headroom report for a wireless device and a base station |
US9820298B2 (en) * | 2015-03-09 | 2017-11-14 | Ofinno Technologies, Llc | Scheduling request in a wireless device and wireless network |
US10327236B2 (en) | 2015-03-09 | 2019-06-18 | Comcast Cable Communications, Llc | Secondary cell in a wireless device and wireless network |
US11641255B2 (en) | 2015-04-05 | 2023-05-02 | Comcast Cable Communications, Llc | Uplink control information transmission in a wireless network |
US9877334B2 (en) * | 2015-04-05 | 2018-01-23 | Ofinno Technologies, Llc | Cell configuration in a wireless device and wireless network |
US10028283B2 (en) * | 2015-04-10 | 2018-07-17 | Alcatel-Lucent Usa Inc. | Dynamic physical uplink control channel (PUCCH) |
CN107431586B (en) * | 2015-04-21 | 2023-01-31 | 苹果公司 | User equipment and method for Physical Uplink Control Channel (PUCCH) resource allocation and communication |
EP3293940B1 (en) * | 2015-05-27 | 2019-04-24 | Huawei Technologies Co., Ltd. | Method and device for user equipment switchover |
US9894681B2 (en) | 2015-06-12 | 2018-02-13 | Ofinno Technologies, Llc | Uplink scheduling in a wireless device and wireless network |
US10200177B2 (en) | 2015-06-12 | 2019-02-05 | Comcast Cable Communications, Llc | Scheduling request on a secondary cell of a wireless device |
US9948487B2 (en) | 2015-06-15 | 2018-04-17 | Ofinno Technologies, Llc | Uplink resource allocation in a wireless network |
WO2016201632A1 (en) * | 2015-06-17 | 2016-12-22 | Telefonaktiebolaget Lm Ericsson (Publ) | Multicarrier scheduling |
US10104568B2 (en) * | 2015-06-30 | 2018-10-16 | Qualcomm Incorporated | Periodic channel state information reporting for enhanced carrier aggregation |
JP6896705B2 (en) * | 2015-08-21 | 2021-06-30 | 華為技術有限公司Huawei Technologies Co.,Ltd. | Wireless communication methods, network devices, user devices, and systems |
EP3430739B1 (en) * | 2016-03-18 | 2023-05-24 | Telefonaktiebolaget LM Ericsson (PUBL) | Method, controller, network node site and computer program |
US20180027576A1 (en) * | 2016-07-21 | 2018-01-25 | Sharp Laboratories Of America, Inc. | User equipment and base stations that transceive ultra reliable low latency messages amidst delay tolerant transceptions |
CN109479208B (en) * | 2016-08-11 | 2021-06-22 | 华为技术有限公司 | Information processing method and device |
CN107800524B (en) * | 2016-09-02 | 2020-08-07 | 上海诺基亚贝尔股份有限公司 | Method and apparatus for transmitting uplink control information |
ES2863399T3 (en) | 2016-12-19 | 2021-10-11 | Guangdong Oppo Mobile Telecommunications Corp Ltd | Procedure for transmitting information, network device and terminal device |
IL267827B2 (en) | 2017-01-06 | 2023-04-01 | Guangdong Oppo Mobile Telecommunications Corp Ltd | Measurement method, base station and terminal |
US11153857B2 (en) | 2017-02-11 | 2021-10-19 | Lg Electronics Inc. | Method for physical uplink control channel transmission/reception between terminal and base station in wireless communication system, and apparatus supporting same |
KR102345014B1 (en) * | 2017-03-02 | 2021-12-30 | 가부시키가이샤 엔티티 도코모 | User terminal and wireless communication method |
JP7268955B2 (en) * | 2017-03-24 | 2023-05-08 | ソニーグループ株式会社 | Terminal device, communication method, and program |
US10686564B2 (en) * | 2017-04-18 | 2020-06-16 | Qualcomm Incorporated | Pre-timed and on-demand HARQ Ack feedback |
CA3062526C (en) | 2017-05-05 | 2022-06-21 | Telefonaktiebolaget Lm Ericsson (Publ) | Allocation of acknowledgement resources |
RU2747131C1 (en) * | 2017-08-09 | 2021-04-28 | Нтт Докомо, Инк. | User terminal, base station and radio communication method |
US10405308B2 (en) | 2017-08-11 | 2019-09-03 | At&T Intellectual Property I, L.P. | Facilitating forward-compatible receivers in wireless communications systems |
CN117062240A (en) | 2017-08-11 | 2023-11-14 | 华为技术有限公司 | Scheduling request sending method, scheduling request processing method and related equipment |
WO2019073357A1 (en) * | 2017-10-10 | 2019-04-18 | Telefonaktiebolaget Lm Ericsson (Publ) | Changing physical uplink control channel (pucch) resource |
US11303384B2 (en) * | 2017-11-29 | 2022-04-12 | Qualcomm Incorporated | User equipment shift randomization for uplink control channel transmission |
CN111800869B (en) * | 2019-08-22 | 2023-07-18 | 维沃移动通信有限公司 | Physical Uplink Control Channel (PUCCH) transmission method, terminal equipment and network equipment |
US11564248B2 (en) * | 2020-01-29 | 2023-01-24 | Qualcomm Incorporated | Techniques for activation and deactivation of resources configured across multiple component carriers |
US11219011B1 (en) | 2020-03-18 | 2022-01-04 | Sprint Spectrum L.P. | Coordinated use of enhanced downlink control channels (ePDCCHs) in shared spectrum |
US20220039070A1 (en) * | 2020-07-29 | 2022-02-03 | Qualcomm Incorporated | Techniques for releasing multiple sets of semi-persistent scheduling and configured grant resources |
Family Cites Families (37)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2002330166A (en) * | 2001-04-26 | 2002-11-15 | Fujitsu Ltd | Communication device and communication control method |
US8995547B2 (en) * | 2005-03-11 | 2015-03-31 | Qualcomm Incorporated | Systems and methods for reducing uplink resources to provide channel performance feedback for adjustment of downlink MIMO channel data rates |
JP5069040B2 (en) * | 2007-05-01 | 2012-11-07 | 株式会社エヌ・ティ・ティ・ドコモ | Base station apparatus and communication method in mobile communication system |
CN101364856B (en) * | 2007-08-07 | 2012-04-25 | 鼎桥通信技术有限公司 | Resource distribution method and apparatus |
WO2009022474A1 (en) * | 2007-08-14 | 2009-02-19 | Panasonic Corporation | Radio communication device and radio communication method |
KR101422852B1 (en) * | 2008-02-26 | 2014-07-25 | 엘지전자 주식회사 | Method for allocating control information in wireless communication system |
JP4511611B2 (en) * | 2008-05-29 | 2010-07-28 | 株式会社エヌ・ティ・ティ・ドコモ | Radio resource selection method, radio base station, and mobile station |
JP5245584B2 (en) * | 2008-07-04 | 2013-07-24 | 富士通株式会社 | Radio base station and radio communication method |
CN102187726B (en) * | 2008-10-20 | 2014-07-23 | 交互数字专利控股公司 | Carrier aggregation |
EP2200208A1 (en) * | 2008-12-19 | 2010-06-23 | Panasonic Corporation | HARQ ACK/NACK for dynamic PDSCH |
CN101765208B (en) * | 2008-12-26 | 2013-11-06 | 华为技术有限公司 | Method for distributing resources, network equipment and wireless system |
CN101489255B (en) * | 2009-01-09 | 2014-01-01 | 中兴通讯股份有限公司 | Sending method, apparatus and system for uplink control channel |
CN101478368B (en) * | 2009-01-16 | 2014-07-16 | 中兴通讯股份有限公司 | Processing method, terminal, base station for feedback information |
US8522105B2 (en) * | 2009-02-17 | 2013-08-27 | Samsung Electronics Co., Ltd | Transmission of acknowledgement signals |
US8934417B2 (en) * | 2009-03-16 | 2015-01-13 | Google Technology Holdings LLC | Resource allocation in wireless communication systems |
US8724571B2 (en) * | 2009-04-20 | 2014-05-13 | Lg Electronics Inc. | Carrier construction for effective control channel decoding |
US20100271970A1 (en) * | 2009-04-22 | 2010-10-28 | Interdigital Patent Holdings, Inc. | Method and apparatus for transmitting uplink control information for carrier aggregated spectrums |
US8634358B2 (en) * | 2009-04-23 | 2014-01-21 | Qualcomm Incorporated | Method and apparatus for multicarrier control in a wireless communication system |
JP5301727B2 (en) * | 2009-04-27 | 2013-09-25 | テレフオンアクチーボラゲット エル エム エリクソン(パブル) | Resource allocation method and apparatus for random access in a wireless communication system using carrier aggregation |
US9130698B2 (en) * | 2009-05-21 | 2015-09-08 | Qualcomm Incorporated | Failure indication for one or more carriers in a multi-carrier communication environment |
CN101925155A (en) * | 2009-06-11 | 2010-12-22 | 中兴通讯股份有限公司 | Carrier distributing method and device of carrier aggregation system |
MY174035A (en) * | 2009-06-18 | 2020-03-05 | Interdigital Patent Holdings Inc | Operating in a discontinuous reception mode employing carrier aggregation |
US8583128B2 (en) * | 2009-07-13 | 2013-11-12 | Intel Mobile Communications GmbH | Apparatus and method for mapping physical control channels |
US8194603B2 (en) * | 2009-08-18 | 2012-06-05 | Motorola Mobility, Inc. | Subframe component reduction and notification in a heterogeneous wireless communication system |
US20110081913A1 (en) * | 2009-10-02 | 2011-04-07 | Lee Jung A | Method of bandwidth extension by aggregating backwards compatible and non-backwards compatible carriers |
NZ598903A (en) * | 2009-10-05 | 2014-02-28 | Ericsson Telefon Ab L M | Pucch resource allocation for carrier aggregation in lte-advanced |
MX2012002348A (en) * | 2009-10-05 | 2012-03-29 | Ericsson Telefon Ab L M | Methods and arrangements in a mobile telecommunication network. |
ES2789098T3 (en) * | 2009-10-13 | 2020-10-23 | Ericsson Telefon Ab L M | Method and arrangement in a communication system |
WO2011099340A1 (en) * | 2010-02-09 | 2011-08-18 | シャープ株式会社 | Communication method, mobile station apparatus, base station apparatus and mobile communication system |
US20120314675A1 (en) * | 2010-02-21 | 2012-12-13 | Lg Electronics Inc. | Method for managing carrier aggregation sets, and related devices |
US8644199B2 (en) * | 2010-03-31 | 2014-02-04 | Samsung Electronics Co., Ltd | Indexing resources for transmission of acknowledgement signals in multi-cell TDD communication systems |
CN103098536A (en) * | 2010-04-22 | 2013-05-08 | 夏普株式会社 | Communication method and system for physical uplink control channel resource assignment, and base station, user equipment and integrated circuit therein |
CN102238750A (en) * | 2010-04-23 | 2011-11-09 | 中兴通讯股份有限公司 | Radio resource control connection re-establishment triggering method and device |
EP2605584A1 (en) * | 2010-08-13 | 2013-06-19 | Fujitsu Limited | Method, mobile station and multi-carrier communication system for transmitting uplink response signal |
KR20120030919A (en) * | 2010-09-20 | 2012-03-29 | 엘지전자 주식회사 | Method and apparatus for carrier aggregation in wireless communication system |
US9930677B2 (en) * | 2010-12-07 | 2018-03-27 | Sharp Kabushiki Kaisha | Prioritizing multiple channel state information (CSI) reporting with carrier aggregation |
KR101548067B1 (en) * | 2011-03-21 | 2015-08-27 | 엘지전자 주식회사 | Method and device for executing harq in tdd-based wireless communication system |
-
2010
- 2010-10-04 NZ NZ598903A patent/NZ598903A/en unknown
- 2010-10-04 DK DK10774312.2T patent/DK2486692T3/en active
- 2010-10-04 PT PT107743122T patent/PT2486692T/en unknown
- 2010-10-04 EP EP10774312.2A patent/EP2486692B1/en active Active
- 2010-10-04 US US12/896,993 patent/US9497004B2/en active Active
- 2010-10-04 PL PL10774312T patent/PL2486692T3/en unknown
- 2010-10-04 CN CN201080045650.8A patent/CN102577219B/en active Active
- 2010-10-04 WO PCT/SE2010/051069 patent/WO2011043721A2/en active Application Filing
- 2010-10-04 CN CN201610380591.9A patent/CN105812114B/en active Active
- 2010-10-04 JP JP2012532051A patent/JP5763651B2/en active Active
- 2010-10-04 RU RU2012118585/07A patent/RU2549365C2/en active
- 2010-10-04 EP EP17199403.1A patent/EP3337080B1/en active Active
- 2010-10-04 ES ES17199403T patent/ES2752802T3/en active Active
- 2010-10-04 HU HUE17199403A patent/HUE045726T2/en unknown
- 2010-10-04 ES ES10774312.2T patent/ES2659886T3/en active Active
-
2015
- 2015-03-23 JP JP2015059975A patent/JP5908138B2/en active Active
-
2016
- 2016-03-22 JP JP2016057545A patent/JP6121587B2/en active Active
- 2016-11-14 US US15/350,360 patent/US9860044B2/en active Active
-
2017
- 2017-11-28 US US15/824,421 patent/US10404437B2/en active Active
Also Published As
Publication number | Publication date |
---|---|
NZ598903A (en) | 2014-02-28 |
US20170063506A1 (en) | 2017-03-02 |
RU2549365C2 (en) | 2015-04-27 |
HUE045726T2 (en) | 2020-01-28 |
US10404437B2 (en) | 2019-09-03 |
EP3337080B1 (en) | 2019-07-24 |
US9860044B2 (en) | 2018-01-02 |
CN102577219B (en) | 2016-06-29 |
ES2659886T3 (en) | 2018-03-19 |
JP5908138B2 (en) | 2016-04-26 |
EP2486692B1 (en) | 2017-12-13 |
JP5763651B2 (en) | 2015-08-12 |
US9497004B2 (en) | 2016-11-15 |
JP2013507037A (en) | 2013-02-28 |
EP3337080A1 (en) | 2018-06-20 |
JP6121587B2 (en) | 2017-04-26 |
EP2486692A2 (en) | 2012-08-15 |
CN102577219A (en) | 2012-07-11 |
ES2752802T3 (en) | 2020-04-06 |
CN105812114B (en) | 2019-08-06 |
JP2016154351A (en) | 2016-08-25 |
PT2486692T (en) | 2018-01-17 |
WO2011043721A3 (en) | 2011-06-03 |
JP2015156679A (en) | 2015-08-27 |
CN105812114A (en) | 2016-07-27 |
RU2012118585A (en) | 2013-11-10 |
US20110081932A1 (en) | 2011-04-07 |
US20180123762A1 (en) | 2018-05-03 |
WO2011043721A2 (en) | 2011-04-14 |
PL2486692T3 (en) | 2018-05-30 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US10404437B2 (en) | PUCCH resource allocation for carrier aggregation in LTE-advanced | |
US11723033B2 (en) | Method for transmitting uplink signal in wireless communication system and apparatus therefor | |
JP7313699B2 (en) | Method for transmitting uplink control information in wireless communication system and apparatus using same | |
US9756617B2 (en) | Simultaneous reporting of ACK/NACK and channel-state information using PUCCH format 3 resources | |
US8797985B2 (en) | Channel selection and channel-state information collision handling | |
US9197379B2 (en) | Methods and apparatus for modified PHICH | |
KR101253655B1 (en) | Method and apparatus for transmitting and receiving control signal for merging carriers in transmission | |
US8374143B2 (en) | Method of transmitting uplink data in wireless communication system | |
KR101186619B1 (en) | Method for trasmitting control information in wireless communication system and apparatus therefor | |
KR101746537B1 (en) | Method for trasmitting control information in wireless communication system and apparatus therefor | |
EP2600555B1 (en) | Method and apparatus for transmitting uplink control information in a wireless communication system | |
EP2555574B1 (en) | Mobile communication system, base station apparatus, mobile station apparatus, mobile communication method and integrated circuit | |
KR20140010450A (en) | Signal transmission method and device in a wireless communication system | |
KR20130105807A (en) | Method and device for transmitting control information in wireless communication system | |
WO2013051980A1 (en) | Methods and apparatus for modified phich | |
WO2013051982A1 (en) | Channel selection and channel-state information collision handling |